Use configureawait

Author: xPaw

SteamKit2/SteamKit2/Steam/SteamClient/CallbackMgr/CallbackMgr.cs

@@ -106,7 +106,7 @@ public void RunWaitCallbacks()
         public async Task RunWaitCallbackAsync( CancellationToken cancellationToken = default )
         {
             var call = await client.WaitForCallbackAsync( cancellationToken );
-            await HandleAsync( call );
+            await HandleAsync( call ).ConfigureAwait( false );
         }
 
         /// <summary>
@@ -241,7 +241,7 @@ async Task HandleAsync( CallbackMsg call )
 
                     if ( task != null )
                     {
-                        await task;
+                        await task.ConfigureAwait( false );
                     }
                 }
             }

SteamKit2/SteamKit2/Steam/SteamClient/CallbackMgr/CallbackMgr_Internals.cs

@@ -101,14 +101,14 @@ public void Dispose()
             System.GC.SuppressFinalize( this );
         }
 
-        internal override Task Run( CallbackMsg callback )
+        internal override Task? Run( CallbackMsg callback )
         {
             var cb = callback as TCall;
             if ( cb != null && ( cb.JobID == JobID || JobID == JobID.Invalid ) )
             {
                 return OnRun( cb );
             }
-            return Task.CompletedTask;
+            return null;
         }
     }
 }